netdev - Re: [PATCH net-next-2.6 v3 1/1] can: c_can: Added support for Bosch C

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Message-ID: <20110111223843.GB18762@pengutronix.de>
Date:	Tue, 11 Jan 2011 23:38:43 +0100
From:	Wolfram Sang <w.sang@...gutronix.de>
To:	Marc Kleine-Budde <mkl@...gutronix.de>
Cc:	Wolfgang Grandegger <wg@...ndegger.com>,
	Bhupesh SHARMA <bhupesh.sharma@...com>,
	"Socketcan-core@...ts.berlios.de" <Socketcan-core@...ts.berlios.de>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	David Miller <davem@...emloft.net>,
	Oliver Hartkopp <socketcan@...tkopp.net>
Subject: Re: [PATCH net-next-2.6 v3 1/1] can: c_can: Added support for
 Bosch C_CAN controller

On Tue, Jan 11, 2011 at 11:01:47PM +0100, Marc Kleine-Budde wrote:
> On 01/11/2011 07:25 PM, Wolfgang Grandegger wrote:
> 
> [...]
> 
> > I was told that Bosch's page for the C_CAN is here:
> > 
> >  http://www.semiconductors.bosch.de/en/ipmodules/can/canipmodules/c_can/c_can.asp
> > 
> > There it's also written for what bus interfaces the C_CAN is available for, e.g.:
> > 
> >   "The ASIC version is delivered with the AMBA APB bus interface from ARM."
> 
> On ARM we also have the AMBA bus abstraction in Linux, but I've never
> worked with it. IIRC Wolfram (Cc'ed) has recently touched it.

For a programmer, it feels very much like a platform-bus (you can even use
amba-devices on a platform_bus); it has the advantage of some identification
registers at the end of the address-space. The rest is more about how to
connect the core to the SoC. Does that help? I don't know what the actual
question is :)

Regards,

   Wolfram

-- 
Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |

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